US1629409A

US1629409A - Apparatus for separating molten glass into mold charges

Info

Publication number: US1629409A
Application number: US541639A
Authority: US
Inventors: Karl E Peiler
Original assignee: Hartford Empire Co
Current assignee: Hartford Empire Co
Priority date: 1922-03-07
Filing date: 1922-03-07
Publication date: 1927-05-17
Anticipated expiration: 1944-05-17
Also published as: NL15260C

Description

May 17, 1927.

K. E. PEAILER APPARATUS FOR SEPARATING MOLTEN GLASS INTO MOLD vCHARGES i Filed March '7, 1922 3 Sheets-Sheet 1 l I I I l u 1V wl |r \N 1 n n n m n l l 4 l I I 1 i w maw whkw mm, www@ ww NN Qw @www May i7, 1927.

K. 5. PE'ILER APPARATUS FOR SEPARATING MOLTEN GLASS INTO MOLD CHARGES Filed March '7. 1922 s sheets-sheet 2 AFay Z.

K. E. PEILER APPARATUS FOR SEPARATING MOLTEN GLASS INTO MOLD CHARGES May 17, 1927.

Filed March '7. 1922 3 Sheets-Sheet 5 Patented May 17, 1927. l i

UNITED sTATEs PATENT OFFICE.

KARL E. PEILER, oFfwEsT HARTFORI OONNEOTIOUT, AssIGNoR To ITAR:rFORn-nllr `PIRE COMPANY, F HARTFORD, CONNECTICUT, A CORPORATION OF DELAWARE.

APPARATUS FOR SEPARATING MOLTEN GLASS INTO MOLD CHARGES.

Application led 'Hatch 7, 1922. .Serial No. 541,639.

y This invention relates to apparatus for 'separating molten glass into mold charges for use in the molds of shaping machines.

The invention includes a container for the molten glass, having 'a submerged outlet through which the glass is discharged to form'suspended gathers from which mold charges are severed, and means for controlling and regulating the discharge therefrom.

' Although those means co-operate to pro-,l

duce the general result; namely, mold charges of the desired form and weight,

. they are so devised and arranged as to providel a more or less separate control of the l5 two functions of form and weight regulation, and are separately'and independently adjustable, one for determining the weight or size of the mol-d charge. and the other for controlling the shape of the gather so.

that the mold charge severed therefrom may be of the shape best adapted for use in the particular mold for which it is intended.'

The weight regulating means preferably consists of a tube projecting'into the glass in the container, in alignment with the outlet and leaving an annular passageway between -the bottom of the tube and the bottom of the container. The size of this passageway mayv be adjusted toregulate theiiow of glass 30 to the outlet and therefore the weight of the mold charges. by varying the vertical posi-` tion of the tube.

"The shape controlling meansis a plunger' extending through the tube and preferably having its lower end projecting into a cylindrical chamber or well in the bottom of the container, forming a passageway through which the glass passes to thev discharge outlet. l The plunger'with its adhering annulus Iglass may be accelerated and .retard andv mold charges of various shapes may be proof glass acts as pistons, both in the `lower,

duced, some of which are illustrated in my co-pending application Serial No. 294,792,

sled May 5, 1919. e The several objects of the invention and features employed for their accomplishment, will best be understood -from the followin description and 'accompanying drawings o one embodiment of lthe mvention,y in which Figure 1 is afront elevation of the forehearth of a glass furnace and the associated mechanism;

Fig. 2 is a side elevation, artly in section,4

taken on the linef2f2 of ig. 1;

Fig. 3 is a side elevation, in section, on the line 3?-3 of Fig. 1;

Fig. 4 ,is a bottom plan of theshearing mechanism, partly I Fig. 5 is a detail in elevation showing the construction ofv plunger joperating cam,

in section, on the line 4--4 of Fig. 3; and

made in adjustable andremovable sections.

The container 10 for the molten glass may be a forehearth projecting from a :furnace 'of theusual type and provided with a gate y11 (Fig. 3)forregulating the, flow of glass to the front of the-forehearth. Suitable gasv burners are preferably provided for heating the interior of the forebearth to any desired degree. The glass is discharged' from the forehearth through awell 12, having a restrictd outlet in its .lower endformed by an outlet ring 13.' The i'low of glass to the 'well 12 is regulated by a t'ube 14 of suitable refractory material, formingr between -its lower end and `the Hoor of the forehearth, an annular passageway 15 (Fig. 3) through which the glass enters the well.

vary' the weight of themold. charges, the

vtube is vertically 'adjustable either before v In order to vary the rate of this flow and thereby passageway 151` For this purpose `the upper.' Y

end of the tube is secured toan 'arms 16 tainer'. Thel tube may be adjusted verticallyA toward and `from the -well in any convenient way, as bya screw 19 (Fig. 1)

threaded through a lug 20 on the slide 17 '5 n, The shape 0f the gathers discharged projecting 'from the upper end of a slide 17 100 Y 'mounted in guides 1 8 on the sideof the coni movement.

vand suspended beneath the outlet is controlled by a reciprocating plunger 21 jextending centrallyl through the tube and rojecting into the well 12, and with its er- 5 ing annulus of glass acting as a piston in each o' them. '-The viscous glassl serves in both the functions of packings or piston rings. -The lower end ofthe plunger acts :inthe well as a piston to accelerate the dis- ".0Y charge of glass on its downstroke and `vto retarder reverse the movement of the glass `in the outlet on its upstroke, the effects being modilied by the proportion of. the parts and by varying the speed of the plunger Thus the stub of glass remaining' after severing a mold charge by shears 22 may be retracted more or less toward or within the outlet by upward movement of the plunger. yWithin the lower end of` the tube, the plunger and its adhering aunulus of vviscous glass around-it operates as an'annular piston or diaphragm. On its upward stroke the piston'draws up into the' tube at 9 lsome of the glass which enters "-5 through the annular passageway 15, thus tending to make that inflow substantially continuous, although not necessarily uni,- form, and at the same time relieving to`a considerable degree the eiectof the hydro- 3" static head on'the lass below that passageway, and thereby increasing the .retractive effect of the piston action within the well. Upon the downward movement of the plunger, the full hydrostatic head is restored, thus 1.35. increasing the piston elect of that movelment' ofthe plunger in the well.

ln Fig. 3 the high and low posit-ions of the bottom of the plunger .are indicated` approximately by ,therdotted lines 23 and 4f) 24 respectively, but these positions may be adjusted toward or from the outlet ring 13 yto assist in varying the` shape of the mold p charges.

The plunger reciprocated by a cam 26 -45 engaging a roll `27 mounted on a slide'28 havlng a" laterally projecting arm 29 to` whlch the plunger is connected.4 In order that the path of movement ofthe plunger may be adjusted vertically, the plunger isl 50. connected With\.th el arm 29 by a-'screwBO rlgidly connected'with the plunger by a clamp 31. The screw is provided with a crank 32 (Fig. 2) by which it may be turned to adj ustthe vertical position of the plunger 5"* stroke without changing its amplitude., lf

w i other and` to the body of the cam they Amay be replaced by others of 4diierent shape,

thusenabling the shape of the mold charges to be varied at will.

The shears 22 may be of any well known lconstruction such, for example, as shown in Fig. 4, in which they are carried on arms 34 mounted on studs 35 fixed in a casting 36.

The adjacent surfaces of the hubs of the *37 which engage racks 38 formed` on a rod 39 connected with a piston 40. rllhevpiston Vis carried in a cylinder 41 formed on 'the -of the glass in the outletring 13, but in order that the time ofl severing may be adjusted with relation to the discharge of the mold charge, the shear actuating mechanism is made adjustable relativeto the plunger actuating cam 26. The shear operations are controlled by a valve device 44 (Figs. 1 and having a plunger 45 which is depressed, against the action of a spring-46, by a cam 47, toadmit air pressure .to the cylinder 41 to close the shears. The vvalve device 44 is otthe usual construction which by depres` sion of its plunger '45, opens Vaconnection between a pipe 48 connected with a source of air pressure and a pipe 49 leading to the cylinder 41. As the rise of the cam 47 moves away-'from the upper' end ofthe plunger 45, the spring 46 moves the valve plunger into position to connect .the pipe 49 with 'an exhaust port 50 (Fig. 2), allowing the 53and means is provided for adjusting the angular relation of the two cams. One of them, in this case the shear cam 47. isloosely mounted on the shaft 53 and provided with -arms 34 are provided with segmental gears 4 'a bevel gear 54 meshing with an idle pinion 55 also in mesh with a bevel gear 56 fixed on' the shaft 53. The cam 47 is adjusted angu- -larly about the shaft 53 While maintainmg the driving relation therewith, by adjusting the idle pinion 55 about the shaft. For this purpose the pinion 55 is carried by'a hub 57 loosely mounted on the shaft 53.., and provided with a segmental worm gear 58 engaging aworm 59 on a shaft 60 mounted in suit.- able bearings and provided with a hand wheel 61. By turning the wheel, the pinion 55 may be turned forward or back with relation to the rotation of thel shaft53 to ad]ust the angular position ofthe cam 47 and tlms making the shearscut earlier or later, relative-toV the plunger operations, without interrupting the continuous operation. of the machine. This device may be applied to the plunger cam 26,y instead of to the shear cam,

thus keeping the shear timing constant, and

advancing or retarding the timeI ofV the plunger movements.

The 'embodiment of the` invention de-l l scribed has been selected for the purpose of `illustrating one of the many possible embodiments ofthe invention. The plunger 21, well 12, and'tube 14, are preferably made cylindrical for ease of construction, but may be of anydesired crosssection. The plunger 21 is shown as being uniform in size throughout its length, but it may be of dif- `ferent diameters at diierent portions of its length. The interior diameters of the well l 12, and tube 14, and the coacting portions of periodic movements to the plunger, eachl vmovement being regulated to discharge the the plunger 21 and their -proportions to each other, `may be varied so as to obtain the desired piston or displacement effects in each.

The invention may be otherwise modified of glass, a shape controlling plunger projecting into the outlet, andmeans orimparting glassthrough the outlet at a varying rate to l produce masses of predetermined shape,"

2. In apparatus for segregating mold lc harges of regulated weight and shape from molten glass, the combination of a container forth@ glass having a submer ed discharge outlet, means for regulating t e weight 'of the charges independently of theirishape, in-

.cluding a weight regulating member projecting into the glass over the outlet and permanently spaced therefrom at adjustable distances,a shape controlling plun erprojecting'into theoutlet, and means Enr moving theI plunger to discharge each mass of glass at a rapidity varying during the discharge to control the shape of the discharged mass.

3. In apparatus for segregating moltenv glass in mold charges, the combination of a container for the glass having a submerged discharge outlet, a member having a tubular end projecting into the glass in substantial alignment with the outlet and 'adjustable t0 different stationary positions, leaving a permanentl lopen annular adjustable passage for the ow of glass to the outlet to regulate glass into formed mold charges,

. tically movable the weight of the mold charges,'a plunger cxtending permanently past the said passage for'ei'ecting the periodic dischargepof the container for the glass having a submerged discharge outlet, a wellabove the outlet, a member having a tubular end projecting into the glass with its end substantially concentric with the well and adjustable to different stationary positions, leaving a permanently open annular adjustable passage for the flow of glass to the well to regulate the weightl of the mold charges, a plunger extending through and permanently past the tubular end into the well for effecting the periodic discharge of the glass received in the well, and means for operating the plunger in the well to periodically discharge the glass therefrom. I

' 5. In apparatus for separating Amolten glass into -formed mold charges, the combination of a container for the glass having a1 well in its bottom terminating in a discharge outlet, a stationary tubular member projecting into the glass: above the outlet, a vertically movable plungerI projecting though the tubular member into the well, means for moving said plunger periodically to discharge the glass ,from the well at a regulated and variable vrate to form masses of'glass of controlled shape beneath the outlet, and shears operating periodically beneath the outlet in timed .relation to the plunger movements to sever a mold charge yfromeach suspended massM1 6. In apparatus for separating molten the combination of a container for the glass having `a well in its bottom terminatin jin a discharge outlet, a stationary tubu r member projecting into the lass .above 'the outlet, leaving a permanent y open passage for the flow of glass and adjustable vertically to y regulate the How area of said passage, a verthe tubular mem the discharge of glass through the outlet, means for operating said plungerjpenodically in the well to discharge the glass at a regulated and variable rate, to produce the desired formed masses of glass suspended beneath-the outlet, and shears operating eriodically beneath the outlet in timed re ation to the plunger movements tosever a' mold charge from each suspended mass.

7 In apparatus for separating molten glass into formed mold charges, the combination of a container for the glass having a submerged well terminating in a discharge outlet, astationary tubular member projectlunger projecting through 'y er into the glass to control ing into the glass above the outlet leaving a permanently open flow passage and adjustable vertically to regulate the area of said passage, a vertically movable plunger projecting through the tubular' member into the Well for controlling the shape of the mold charges, means for moving said plungerperiodically at a controlled ratev to form successive suspended masses of glassof predetermined and variable shape beneatlithe outlet, and shears operating periodically be- .neath the outlet in'timed relation to the plunger movements to sever a mold charge from each suspended mass.

8.111 apparatus' for separating -molten glass into mold charges, the combination of a container for the glass having a Well f in its bottom terminating in a discharge outlet, a sta'tionary'tubular member projecting into the glass substantially in alignment A With the Well, a vertically reciprocable plunger -projecting -through -the tubular member into the WelL'means for periodically reciprocating the plunger While maintaining its lower end in the Well, and shearing mechanism below the outlet operating in timed relation to the plunger reciprocations.

9. In apparatus for separating molten' glass into mold charges, the combination of a container for the glass having a Well in its bottom provided with a dischargeoutlet, a

stationary tubular member. projecting into the glass above the well in substantial alignment therewith to control the flow of glass 1? thereto, said :member being adjustable tocomprising a 'container having a downwardly o eiiing discharge outlet, ajvertically reciproca le carriage mounted outside' of ycomprising a container having said container, guidi-ng means also'outside ofsaid container, for guiding-said carriage in its verticalV reciprocations an implement for controlling the discharge .of glass through said outlet, an implement holder carried by said earriageandl adjustable vertically with respect to saidcarriage, said implement being held by said holder in ver,-

tical aXial alignment with said outlet, clamping means for rigidly securing said implementtosaid holder, shears comprising blades arranged to meet axially beneath said outlet to sever inoldcharges from the dis,- charged glass, means for reciprocating said carriage, and means for o ening and closing` said shears in timed relation to the reciprocation of said carriage. L v i ,11; Apparatus for feeding molten glass,

a downwardly opening discharge outlet, a vertically reciprocable carriage mounted outside of said container, guiding means also outside. of saidv container, or'guiding said carriage in its vertical reciprocations, an implement for controlling the' discharge Vof glass through said outlet, an implement holder carried byv said carriage and adjustable vertically-With yrespect to said carriage, said implement being held,I by said' holder` in vertical axial alignment with said outlet," clamping means forY rigidly securing said implement to said'" holder, shears comprising blades arranged to meet axially beneathl said outlet 4to sever mold charges from -the discharged glass,

means for reciprocating said carriage, means for. opening and closing said shears in timed relation to the reciprocation of said'carriage, and means for varying the vertical position of said holder with respect to said carriage to vary the vertical position of said implementat the time when the said shears sever the glass;

day of March, '1922.

. Signed at Hartford, Connecticut, vlthis 2nd I i KARL El manina. t